Truck-frame.



H. S. HART.

TRUCK FRAME. APPLIOATION IILED 0OT.11, 1907.

1,026,744, I PatentedMay21, 1912.

jl zznesses; I 12/672207:

y I Maw aw/Mm UNITED STATES PATENT HARRY s. HART, or CHICAGO, rumors, ASSIGNOR 'ro WOLFF TRUCK FRAME coMPANY, or CHICAGO, rumors, A conroan'rron or MAINE.-

TRUCK-FRAME.

Specification of Lette'rs Patent.

Patented May 21,1912.

Application filed October 11, 1907. Serial No. 396,981.

To all whom it may concern:

Be it known that I, HARRY S. HART, a citizen of the United States, residing at Chicago, in'the county of Cook and State of Illinois, lfave invented certain new and useful Improvements in Truck-F ra1nes, of which the following is a specification.

One of the objects of my invention is to I provide a car truck side frame having the journal boxes attached theretoin such a way as to properly carry the load and withstand shocks.

Another object is to provide a construction of the journal boxes that shall facilitate putting them together or taking them apart and that shall securely hold them together when desired.

A further object is to provide a side frame for a car truck that shall facilitate placing the end of the bolster inoperative relation thereto. f v

Still andther object is to provide a construction that shall hold the bolster end in i so operative relation to theside frame whenfit-f has once been properly placed.

In the drawings-Fig-ure 1 is a side ole-- vation of'my improved-truck frame. Fig. 2

is a top plan. view of the same.- Fig. 3 is an end view showing one of. the journal boxes, Fig. L-is a perspective detail of an elementqf Fig. 5 is a section on the line 5,- 5 Of 1.-

The-reference numeral 23 designates the upper half of each journal box. -'The walls of this upper half arecast integral with the side frame. The complementary lower half 24015 the journal box is'detachable The bottom edges of the upper half carry two opposite lips 25 each having. an nner groove 26'. The detachable bottom'part 24 carriestongues 27 adapted to engage the grooves 26. The lip 25 is thickenedTfatthe point indicated by the, reference numeral 28, and thus without-lossof strengthfroom for the keyway. 29 is provided. [Tins lgey- .as the groove 2 mi the top and'bottom way extends across 1 in positio by a cotter-pin 31.

The si e frame consists ofing with certain minor parts ,detachably annexed thereto. The top arch bar 15, bottom arch bar 16 and the two columns 17 are comprisedfin this single casting. Oncach he tongue 27 as well, rice-the key 30-lbcks parts 23 and24 of, the journal'box' together. The, key is secured 5 i a single feastthese .prolongations engage the lugs 19 andserve to hold the plate 20 in position against the inner face of the oolumn17.

The upper half 23. of the journal box is adapted vto receive the bearing brass, and through this the weight of the car and the horizontal stresses of starting and stopping are communicated from the side frame to the car axle shaft.- The lower part 24 of the journal box holds the lubricantand serves to exclude dirt, but it neither sustalns nor transmits any of the load orthe shocks due to acceleration. or'retardation of the car. 3

In operation a plate 20 is lodged against 1 the inner face ofeach of the columns 17.

""For the sake of clearness only one plate is shown in Figs. 1 and 2. When both plates are in place they render the bolster end opening narrower at the top than at the bottom, thus the end of the bolster can be introducedf'into the bottom part of the opening, then-raised so that its flanges will engage the plates 20, and it will be held in this ..pos'ition' by introducing the bolster spring above the bottom arch bar 16. When the bolster is in place with its end projecting through the upper part of the opening and its flanges embracing the plates 20, the said plates will be securely "held in place. But when the bolster end is dropped to the bottom of the opening the plates 20 can .be instantly removed by removing t-he bot" ftom end" of each inward funtil it" ceases to engage ;the lugs 18, then. droppingthe plate as "a wholeuntil the.project1ons"22 cease to .engage the lugs 19. -It wil'l be seen that the mode of attachmentbetween the plates secure and convenient. .jIclalm': r

1*. In a 'car truck side frame, a ournal boxhaving the upper part thereof integral with said frame, the lower part having a sliding connection with the upper part.

I 2. In a car truck side frame, a journal ,20 and the respeetive columns 17 is simple,-

- box below said plane being detachable therev box having a part thereof integral with the side frame, and another part detachably connected thereto, one part having a tongue and the other part having a groove, the tongue'and groove being adapted to ooact in uniting the two parts of the journal box. 3.- In a car truck side frame, a journal box having two parts separated by a substantially horizontal plane located approximately midway the top and bottom thereof, "allof said box above said planetbeing integral with the side frame, and all of said from, and interlocking means formed initeg'rally with the two parts of the journal boxfor supporting the lower part of the box; i

4:. In a car truck side frame, a journal box having the upper part thereof integral with said frame, the lower part having a sliding connection with the upper. part, and means for locking the twoparts against a sliding movement.

5. In a car truck side frame, a'journal box having the upper part thereof integral with said frame, the lower part being wholly supported by direct engagement-with the upper part.

6. In a car truck side frame, a journal box having the upper part thereof integral with said frame, the lower part being wholly supported by the upper part, and means formed integrally with the two parts of the journal box for detachably securing said lower part tosaid upper part;

HARRY s. HART.

Witnesses:

EnY'rH'E M. ANDERSON, J ENNIE A. MAGEDWARD. 

